Study Of Evaporative Cooling Air Conditioning All Air System Control Strategy

The so called "Green, energy-saving" evaporative cooling air conditioningtechnology was more and more widely used in our country. And the basic theory ofevaporative cooling air conditioning technology has been relatively mature. But theevaporative cooling air conditioning automatic operation control system was notperfect. In the actual engineering, the evaporative cooling air conditioning automaticoperation control system was not running perfectly lead the system had not reach theideal state, and more the energy saving, environmental protection air conditioning inapplication by some degree of obstruction. Therefore, evaporative cooling airconditioning system, especially the entire air system operation control research wasvery important. How to improve the air conditioning system stable operation andenergy saving effect? In this paper, based on the study of combing the traditionalmechanical refrigeration air conditioning system control theories and strategies,analysis of the evaporative cooling air conditioning all air system comparative. At thesame time, depend on the current research results of the study basic technicalprinciple of evaporative cooling air conditioning, application area, the entire airsystem application requirements of the object, as well as the influence of factors, andfurther study on these basis. and then systematic study and summary on theevaporative cooling air conditioning all air system operation control strategy.Evaporative cooling air conditioning system is through the unsaturated air incontact with water, using water evaporation for high-temperature cold water or coldair. Therefore, the air conditioning system stable operation has direct relation withoutdoors. How to increase the evaporation cooling air conditioning system stability,accuracy, air conditioning energy saving effect? Through a complete, reasonable,feasible control strategy is effective to solve train of thought in the paper. Therefore,in view of the current application status of evaporative cooling air conditioningsystem, the research topic of this article is evaporative cooling air conditioning system(all air system) operation control strategy. The main contents of this paperare,(1)Strategy summary on the traditional central air conditioning system automaticcontrol.(2) Analysis the similarities and differences of the traditional central air-conditioning system and evaporative cooling air conditioning all air system controlstrategy.(3) Deep study and summary on evaporative cooling air conditioning all airsystem operation principle, characteristics and operation control of influence factorsand current situation.(4) on the basis of previous studies to further improve theexisting evaporative cooling air conditioning air system control scheme, and putforward the evaporative cooling air conditioning air system operation control strategy.(5)It was proposes an intelligent control module, which can intelligent and modularlinkage control to reach the stability of system operation and energy savingoptimization. Detail introduced the direct evaporative cooling air conditioning system,indirect and direct evaporative cooling air conditioning system and multi-stageevaporative cooling air conditioning unit of the operation control.Through this study, especially in automatic control system of similarities anddifferences the traditional mechanical refrigeration air conditioning systems andevaporative cooling air conditioning system. Research Summarize the characteristicsof evaporative cooling air conditioning system operation control. Operates control ofevaporative cooling air conditioning system overall relative to the traditionalmechanical refrigeration and air conditioning system operation control was morecomplex. The control parameters less at the same time mutually coupling. In order tosolve the problem of evaporative cooling air conditioning system, it was put forwardthe reasonable evaporative cooling air conditioning system of macro control policy.At the same time, the evaporative cooling air conditioning system operation controlsystem for modular division, adopt linkage control ideas to solve or reduce the controlof the complicated degree and coupling. Therefore, it was put forward a kind ofintelligent device-intelligent control module and it can realize the evaporativecooling air conditioning system in automatic operation control. Through theintelligent control module setting (setting control parameter values), the evaporativecooling air conditioning system, air VAV operation transformation as well as theindirect or direct segment of the segmented control can realized. And in the VAVoperation according to the requirements of its set value can be segmented indoor setthe same time.In addition, the intelligent control linkage adjustment module of evaporativecooling air conditioning system control segment (piecewise frequency) control toreduce the energy consumption of variable frequency device and prolong the servicelife. And it can improve the operation stability of evaporative cooling air conditioning system. Finally make the evaporative cooling air conditioning system meet therequirements under the premise of achieving energy saving optimization of operation,so that evaporative cooling air conditioning system in all suitable areas are widelyused. The evaporative cooling technology in energy saving and emission reductionshould play a role.In short, the evaporative cooling air conditioning air system control theory andoperation control system of a certain extent, specific, while provides a practicable forthe specific evaporation cooling air conditioning system operation control systemdesign, the evaporative cooling air conditioning system application effectoptimization to provide a theoretical basis.